acotyledon

American

[ay-kot-l-eed-n, ay-kot-] / ˈeɪˌkɒt lˈid n, eɪˌkɒt- /

noun

a plant without cotyledons, therefore one belonging to a group lower than the seed plants.

acotyledon British

/ əˌkɒtɪˈliːdən /

noun

any plant, such as a fern or moss, that does not possess cotyledons

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

acotyledonous

adjective

Etymology

Origin of acotyledon

First recorded in 1810–20; a- ⁶ + cotyledon

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023